Does one pull out or drain your fertile nut deep

Alright...so you couldn't resist the urge to view your stage-sis bare. It starts off as playful sexual stress, but then as her clothes start to appear off... it receives extremely true! Your Mind is telling you this is not correct, but your inside primal instincts will not end her as she begins to stroke your hard cock. Before you realize it, she opens her mouth, and you're feeling her tongue all-around your idea... then her legs spread as she guides your throbbing meat into her swollen wet vagina. It’s all taking place so rapidly; you’re pounding her as she more info moans!! Your balls swell up with cum, and you simply listen to your step-sis say...cum inside me! Does one pull out or drain your fertile nut deep inside her?